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In Reply to: RE: Let's start a thread about these..... posted by Awe-d-o-file on July 28, 2015 at 13:27:41
First let me say I do not have any hands on experience with the ground box. I do not have any idea how the thing works.With that said....
Quote from the Link you provide:
This noise always seeks the easiest path to the earth. And since this can be everything from 50-60 Hz to very high-frequency, but weak, currents, it is not always certain that the path of least resistance is via the protective earth. These currents instead can find dishwashers, laundry machines, counter tops with water pipes, your HiFi rack and your stereo set with all the cables and devices as more attractive paths to the earth. Moreover, these stay voltages often generate very large magnetic fields that absolutely have influence on the sound reproduction.One big problem is that the protective ground many time are overloaded or not constructed for handle this pollutions. It can handle a real "bang" of 110-220Volt and X Watts without any problems, but when it come to this small currents of some Milli V with very high frequency it don't catch them. So instead these will flow around in the power system searching for a place to ground. And in fact the protective ground can leak back a lot of pollutions to the power net that instead go to f,ex your HiFi system with all the cables and magnetic fields and load up and rest there in their search for ground. Our ground boxes / Eartha cables are designed to resemble and work like a bit of Mother Earth in concentrated form and offer the simplest and fastest route for this high-frequency noise to reach a earth point.
Mother Earth has nothing to do with it. The earth does not possess some magical mystical power that sucks nasties from an audio system. There are umpteen white papers written by EEs and Physicists on the subject of Mother Earth grounding. Good example is the B1 Stealth Bomber. No earth connection there.....
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The below Link is a thread from Agon. It may be of interest.
Edits: 07/28/15Follow Ups:
I think with English a second language foe this Sweedish company that this is the safety ground or third pin on a power plug. It seems to have no connection to anything but is a terminus itself. Thanks for the link!
E
T
He uses both terms. Protective earth as well as equipment ground.> > > >
Here's what Henry W Ott said.
Electromagnetic Compatibility Engineering
3.1.4 Earth grounds.
It is a myth that connecting equipment to an earth reduces noise and interference.
> > > > > > > >
Here is a white paper of a seminar Bill Whitlock gave in 2012.
Pay close attention to pages 31 through 36.http://centralindianaaes.files.wordpress.com/2012/09/indy-aes-2012-seminar-w-notes-v1-0.pdf
> > > > > > > > > > > >
Middle Atlantic, White Papers.Click on.
Power Distribution and Grounding of Audio, Video and Telecommunications Equipment White Paper (986 KB)
Click on.
Addendum to Power Distribution White Paper (87 KB)
http://www.middleatlantic.com/resources/white-papers.aspx
> > > > > > > > > >
Edits: 07/30/15
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